ubuntu@ubuntu:~$ journalctl -xe
-- An ExecStart= process belonging to unit zabbix-agent.service has exited.
--
-- The process' exit code is 'exited' and its exit status is 1.
Feb 07 11:07:54 ubuntu systemd[1]: zabbix-agent.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit zabbix-agent.service has entered the 'failed' state with result 'exit-code'.
Feb 07 11:07:54 ubuntu systemd[1]: Failed to start Zabbix Agent.
-- Subject: A start job for unit zabbix-agent.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-agent.service has finished with a failure.
--
-- The job identifier is 381181 and the job result is failed.
Feb 07 11:07:55 ubuntu systemd[1]: zabbix-server.service: Scheduled restart job, restart counter is at 3.
-- Subject: Automatic restarting of a unit has been scheduled
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Automatic restarting of the unit zabbix-server.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
Feb 07 11:07:55 ubuntu systemd[1]: Stopped Zabbix Server.
-- Subject: A stop job for unit zabbix-server.service has finished
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A stop job for unit zabbix-server.service has finished.
--
-- The job identifier is 381260 and the job result is done.
Feb 07 11:07:55 ubuntu systemd[1]: Starting Zabbix Server...
-- Subject: A start job for unit zabbix-server.service has begun execution
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-server.service has begun execution.
--
-- The job identifier is 381260.
Feb 07 11:07:55 ubuntu zabbix_server[149770]: zabbix_server [149770]: User=zabbix contradicts AllowRoot=0
Feb 07 11:07:55 ubuntu zabbix_server[149770]: zabbix_server [149770]: cannot run as root!
Feb 07 11:07:55 ubuntu systemd[1]: zabbix-server.service: Control process exited, code=exited, status=1/FAILURE
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- An ExecStart= process belonging to unit zabbix-server.service has exited.
--
-- The process' exit code is 'exited' and its exit status is 1.
Feb 07 11:07:55 ubuntu systemd[1]: zabbix-server.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit zabbix-server.service has entered the 'failed' state with result 'exit-code'.
Feb 07 11:07:55 ubuntu systemd[1]: Failed to start Zabbix Server.
-- Subject: A start job for unit zabbix-server.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-server.service has finished with a failure.

ubuntu@ubuntu:~$ sudo service zabbix-server start
Job for zabbix-server.service failed because the control process exited with error code.
See "systemctl status zabbix-server.service" and "journalctl -xe" for details.
ubuntu@ubuntu:~$ systemctl status zabbix-server.service
● zabbix-server.service - Zabbix Server
     Loaded: loaded (/lib/systemd/system/zabbix-server.service; enabled; vendor preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Mon 2022-02-07 11:13:33 UTC; 956ms ago
    Process: 149909 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=1/FAILURE)
ubuntu@ubuntu:~$ journalctl -xe
-- The process' exit code is 'exited' and its exit status is 1.
Feb 07 11:14:03 ubuntu systemd[1]: zabbix-agent.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit zabbix-agent.service has entered the 'failed' state with result 'exit-code'.
Feb 07 11:14:03 ubuntu systemd[1]: Failed to start Zabbix Agent.
-- Subject: A start job for unit zabbix-agent.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-agent.service has finished with a failure.
--
-- The job identifier is 387027 and the job result is failed.
Feb 07 11:14:04 ubuntu systemd[1]: zabbix-server.service: Scheduled restart job, restart counter is at 39.
-- Subject: Automatic restarting of a unit has been scheduled
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Automatic restarting of the unit zabbix-server.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
Feb 07 11:14:04 ubuntu systemd[1]: Stopped Zabbix Server.
-- Subject: A stop job for unit zabbix-server.service has finished
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A stop job for unit zabbix-server.service has finished.
--
-- The job identifier is 387106 and the job result is done.
Feb 07 11:14:04 ubuntu systemd[1]: Starting Zabbix Server...
-- Subject: A start job for unit zabbix-server.service has begun execution
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-server.service has begun execution.
--
-- The job identifier is 387106.
Feb 07 11:14:04 ubuntu zabbix_server[149917]: zabbix_server [149917]: User=zabbix contradicts AllowRoot=0
Feb 07 11:14:04 ubuntu zabbix_server[149917]: zabbix_server [149917]: cannot run as root!
Feb 07 11:14:04 ubuntu systemd[1]: zabbix-server.service: Control process exited, code=exited, status=1/FAILURE
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- An ExecStart= process belonging to unit zabbix-server.service has exited.
--
-- The process' exit code is 'exited' and its exit status is 1.
Feb 07 11:14:04 ubuntu systemd[1]: zabbix-server.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit zabbix-server.service has entered the 'failed' state with result 'exit-code'.
Feb 07 11:14:04 ubuntu systemd[1]: Failed to start Zabbix Server.
-- Subject: A start job for unit zabbix-server.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit zabbix-server.service has finished with a failure.
--
-- The job identifier is 387106 and the job result is failed.
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